Appendix B WCAG 2.0 Checklist (Non-Normative)

This section is informative.

The Web Content Accessibility Guidelines 2.0 Checklist serves as an appendix to Web Content Accessibility Guidelines 2.0 [WCAG20]. It lists all of the success criteria from WCAG 2.0 in a checkable list. The level of each success criterion is provided as well as a link to WCAG 2.0 for more information for each success criterion. For many readers, the Checklist provides a quick reference and overview to the information in WCAG 2.0.

1.4.4 Audio content does not contain background sounds, background sounds can be turned off, or background sounds are at least 20 decibels lower than the foreground audio content, with the exception of occasional sound effects.
[How to meet 1.4.4]

Note: A 20 decibel difference in sound level is roughly 4 times quieter (or louder). Background sound that meets this requirement will be approximately four times (4x) quieter than the foreground audio content.

Guideline 2.2 : Allow users to control time limits on their reading or interaction.

True

Success Criterion

Comments

L1

2.2.1 For each time-out that is a function of the content, at least one of the following is true:
[How to meet 2.2.1]

the user is allowed to deactivate the time-out or;

the user is allowed to adjust the time-out over a wide range which is at least ten times the length of the default setting or;

the user is warned before time expires and given at least 20 seconds to extend the time-out with a simple action (for example, "hit any key") and the user is allowed to extend the timeout at least 10 times or;

the time-out is an important part of a real-time event (for example, an auction), and no alternative to the time-out is possible or;

the time-out is part of an activity where timing is essential (for example, competitive gaming or time-based testing) and time limits can not be extended further without invalidating the activity.

2.5.2 If an input error is detected and suggestions for correction are known and can be provided without jeopardizing the security or purpose of the content, the suggestions are provided to the user.
[How to meet 2.5.2]

2.5.3 For forms that cause legal or financial transactions to occur, that modify or
delete data in data storage systems, or that submit test responses, at
least one of the following is true:
[How to meet 2.5.3]

Actions are reversible.

Actions are checked for input errors before going on to the next step in the process.

The user is able to review and confirm or correct information before submitting it.

3.2.2 Changing the setting of any form control or field does not automatically cause a change of context (beyond moving to the next field in tab order) unless the delivery unit contains instructions before the control that describe the behavior.
[How to meet 3.2.2]

4.1.2 The role, state, and value can be programmatically determined for every user interface component in the Web content that accepts input from the user or changes dynamically in response to user input or external events.
[How to meet 4.1.2]